I'm trying to add a parameter to a dbForge Report and having trouble with the syntax.
The parameter Look-Up Setting is a Static List.

My filter string is currently [fund_class] Equals ?parameter1, where fund_class is the column in the query that the values mentioned above appear, and parameter1 is currently the name of the parameter.
I'd like to be able to click 'All' from the drop-down menu when I preview the report and have the report display all records with values 1, A, LP, or null.
What should my syntax be in the filter string and in the Look-Up Values?
Many thanks.


